ISDT K4 User manual

Bedienungsanleitung

Please visit: www.isdt.co for more details on the functions of this smart charger,
as well as purchase various accessories.
Functions of products will be kept on upgrading, the manual in your hand
may be dierent from the actual operation, please refer to the actual functions.
Thanks for purchasing the ISDT K4 Smart Charger
Warnings and Safety Tips
Never use the charger without supervision, please stop using the charger and refer to the manual for reasons if
any functional abnormity.
Keep the charger away from dust, humidity, rain and high temperature, as well as avoid direct exposure to the
sunlight and intense vibration.
Place the charger on a heat-resisting, non-flammable and insulating surface.
Do not use it on the car’s seats, carpet or other similar places. Keep inflammable and explosive objects away
from operation areas of the charger.
Read the instruction manual carefully to be familiar with the features of the charger, and set proper charging
parameters before operating. Setting the parameters incorrectly will result in damage to the product, personal
property and cause serious injury as well.
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For your safety and a better user experience, please read this manual and
follow the instruction before using the new charger.
Specifications
Model No.: K4
Input voltage: AC 100~240V / DC 10~34V
Output voltage: DC 1~34V
Max. input current: DC 45A
Charging current: 0.2~20A ×2
Discharging current: 0.2~3.0A ×2
Max. charging power: AC 400W / DC 600W ×2
Max. Discharging power: 30W ×2
Balance current: 1.5A/Cell Max
Supported battery types and cell count:
LiFe,LiIon,LiPo 1~8S; LiHv,ULiHv 1~7S; Pb 1~14S; NiMH/Cd 1~18S
Parallel charging power/current: 800W/35A
Parallel discharging power/current: 60W/3A
Abnormal voltage alarm: Support
Incorrect cell count setting alarm: Support
Support Working temperature: 0~40°C
Storage temperature: -20~60°C
Dimension: 176×183×57mm
Weight: About 1230g
NiCd/MH
Pb
LiFe
Lilon
LiPo
LiHv
ULiHv
Rated
Voltage
1.20V
2.00V
3.20V
3.60V
3.70V
3.80V
3.90V
Full Charge
Voltage
1.40V
2.40V
3.65V
4.10V
4.20V
4.35V
4.45V
Storage
Voltage
3.30V
3.70V
3.80V
3.85V
3.90V
Discharge
Voltage
0.90V
1.90V
2.90V
3.20V
3.30V
3.40V
3.50V
Balance
Charge
Unbalanced
Charge
Supported
Cell Count
1~18S
1~14S
1-8S
1-8S
1-8S
1-7S
1-7S
Max. Charging
Current
20.0A
20.0A
20.0A
20.0A
20.0A
20.0A
20.0A
Preset Battery Type of Charger and Task Parameters
USER GUIDE
FIRE HAZARD!WARNING!
• Never attempt to charge primary (non-rechargeable) batteries.
• Batteries pose a severe risk of fire if not properly handled.
• Read entire operation manual before using charger.
• This unit may emit heat during use.
• Only operate this device in a cool ventilated
area away from flammable objects.
• Failure to observe safety procedures may
cause damages to property or injury.
NEVER USE CHARGER UNSUPERVISED
Key operation instructions
(under standby interface)
CH1 Channel Middle key:
Short press to enter the CH1
detailed parameter interface,
Long press to enter the CH1
task setting menu.
CH2 Channel Middle key:
Short press to enter the CH2
detailed parameter interface,
Long press to enter the CH2
task setting menu.
Long press the CH1 and CH2
button at the same time:
Enter the advanced settings
menu.
CH1
Button
Display
screen
SMART
CHARGER
CH1
Button
AC Power
Input
DC Power
Input
USB-C
Upgrading Port
Fan
Vent
Fan
Vent
CH1
Power
Output
CH2
Power
Output
CH1
Balance
Port
CH2
Balance
Port
Port / Buttons
How to Conrm Charging Current
Make sure to know the maximum charging current of the battery before charging, never use excessive
current to charge to damage your battery, which will result in over heat even explosion during the
charging process.
The charging and discharging capacity of battery is usually marked with C value. Multiplying the
charging C value and battery capacity equals to the maximum charging current supported by the
battery. For example, for a 1000mAh battery with a charging capacity of 5C, the maximum charging
current would be 1000*5=5000mA; therefore, the maximum charging current is 5A.
For a lithium battery, if it is impossible to confirm the supported charging C value, please set the
charging current below 1C, for the sake of its (lithium battery) safety.
The reference relation between C value and charging time: charging time ≥60 minutes/ charging
C value (e.g. it needs around 60-70 minutes to complete charging with 1C).

Operating the Charger
Task
Battery
Battery and cell count
Current
Charge, Discharge, Destroy, Storage
LiHv、LiPo、LiIon、LiFe、Pb、NiMh/Cd、ULiHv
LiFe,LiIon,LiPo (1~8S) ; LiHv,ULiHv (1~7S) ;
Pb (1~14S) ; NiMH/Cd (1~18S)
0.2~20.0A
Power on K4 smart charger, connect the battery, and short press the menu button to enter the task
setting menu as follows:
Charge
Balancing port is strongly recommended when charging lipo battery, which can make sure to monitor
voltage on each cell battery and balance it when charging.
Warning beeper will yell before start charging lipo if in non-balance mode (no connecting with balance
port). Current setting range: 0.2~20.0A
Discharge
Current setting range: 0.2~3.0A
Destroy
Connect the battery to be scrapped, and select the scrap function in task options, which capable to
discharge the battery to 0V. Current setting range: 0.2A~3.0A
Storage
Current setting range: 0.2A~20.0A
Charging Screen
Press the middle button to switch the information displayed in the lower half of the screen, as cell
voltage, cell internal resistance, working parameter. The cell voltage and internal resistance only on
display in balancing charging mode.
Advanced Settings
Under the standby interface, long press the CH1 and CH2 button at the same time to enter the
advanced setting menu.
Dual task
Select this setting,the charger will charge/discharge/storage to the two channel batteries with the
same parameters at the same time. Connect the charger with the power supply and power on,
select this setting on the advanced setting menu to set the task parameters.
Paralled task
Select this setting, it could output Max Power to one battery. Find a power splitter or 1/2 power cord,
one end connect with the battery, and the other two ends connect with the battery output port. The
battery balance port could connect with any of the charger's balance port. Connect the charger with
the power supply and power on, and connect your battery as required,select this setting on the
advanced setting menu to set the task parameters.
DC power (CH1)
The charger CH1 is equivalent to a DC power supply when selecting this function, with output voltage
adjustable from 2 to 30V, and current adjustable from 1.0 to 5.0A.
System Setting Menu
Under the advanced setting menu, select the system setting into the system setting menu as follows:
Dual task
Min. input voltage protection: 10~31V
All tasks in operation will be stopped at once and hint warning of low voltage, when the input voltage
is lower than the input voltage as set up.It will protect the battery from being discharged when using
battery pack as power supply.
Max. input power setting: 100~1300W
If the input power is smaller than the max working power(1200W), please set up the parameter as the
actual output power as max input, to protect the input power and enable the charger to work stable.
Volume
There are 4 options of High Mid Low and O for volume setting.When the setting is OFF, it will turn o
the operation sound,but not the warning error beep.
USB Charge
When this item is set to "O", and TYPE-C is the upgrade port.
When this item is set to "On", TYPE-C acts as a USB charging port and outputs 5V/2A power.
Split screen
There are 3 options of 60 seconds,30 seconds and OFF for automatic split screen setting. You can
choose to switch the display of the main interface from the single-channel parameter interface to Dual
channel (split screen) parameter interface.
You can also select "O" to turn o the automatic split screen function.
Wireless connection
Select this to put the charger into Bluetooth pairing mode. While selecting this, open the isdGO App on
your phone and click on the "+" in the upper right corner to search, Select the corresponding device in
the list for Bluetooth connection. After establishing a Bluetooth connection with a mobile phone, you
can view detailed parameters or set tasks through the mobile phone. In the charger pairing mode, a
30-second countdown will be performed, and the pairing mode will automatically exit after the
countdown ends.
Theme
Select this option to set the background color to bright/dark.
Keep Trickle
After charging is complete, choose whether to continue trickle charging. The trickle charge function is
enabled to maintain the lithium battery voltage in a fully charged state, this function is enabled by
default.
Self-test
When all batteries on CH1 and CH2 port are not connected, please select this option to self-test task
manually.
Calibration
The input voltage, output voltage and balance voltage of the charger can be calibrated with this task.
App download
Google Play From ISDT iOS